The effect of Heaven's Mercy is more powerful than expected.

In three minutes, 4680 points of Yuan Energy were provided to the Natural Disaster Tower, while the same Blue Whale Tower only recovered 1080 points!

The difference is reflected.

The power of the Perfect Level Blue Whale Tower lies in the group increase and extremely high growth limit, which cannot be compared to the Mercy of Heaven. However, in terms of single effect, it is not as outstanding as a sophisticated level defense tower.

"Perhaps this is its role. It is not a pure auxiliary tower, but an auxiliary auxiliary tower..."

Cheng Shen thought for no reason.

The two towers work together to restore the natural disaster tower's deep energy, allowing it to successfully break through to excellence.

And climbed all the way to level 16.

Although the special evolution effect of its characteristic 5 was not triggered.

But the attack panel directly increased to 320 points. Taking into account the increase of the Blue Whale Tower, it is 410 points.

The bonus of the second level Speed ​​Tower has increased from 0.01 to 0.02.

Stacked ten layers full.

It can directly reduce the damage interval of the Scourge Tower to 0.8 seconds.

Coupled with the attack speed bonus of Heaven's Mercy, the attack speed of the Scourge Tower is close to 0.7.

Such a fast attack interval.

This makes its already exaggerated area coverage damage even more outrageous.

[The third wave of void challenge monsters has arrived!]

[The attacking party this time: Malicious Wandering Souls!]

【Quantity: 120!】

[Warning! Elite units appear among the enemies in this siege. The existence of elites will greatly enhance the desire of ordinary enemies to attack. Please kill them first! The elite units that appear this time are: Malicious Banshees! ]

The moment the system prompt sounds.

Cheng Shen also built another defense tower that he and Tianzhi Mercy had chosen.

The name of this defense tower is Totem of Hatred.

Dark system.

Rare level.

The effect is to affect enemies within fifteen yards, making them have a higher desire to attack.

This desire to attack can drive them into a state of irrationality.

Indiscriminate attack.

However, in the attack and defense mode, monsters cannot attack the defense tower on the void path. The only objects that can attack are undoubtedly companions.

Cheng Shen built the Totem of Hatred thirty yards away from the Natural Disaster Tower.

That is, within the scope where the plague takes effect.

Once the plague is triggered, various curse states can be randomly applied to the enemy, which can complement each other with the Totem of Hate.

"Woo!"

A large group of wandering souls with teeth and claws have emerged from the whirlpool. They are making ghostly screams. Their facial features are empty, with only black holes. The terrifying sound is like the roar of the wind pouring into their facial features.

Among this group of wandering spirits was a terrifying banshee wearing a torn white dress and standing two meters tall. It had dry limbs, sharp fingers, a twisted and elongated face, and bloody scabs at the corners of its eyes, releasing malice without reservation.

Cheng Shen glanced over.

The special skill attached to this elite monster is a strong aura, which can increase the health of surrounding units by 20%. If all surrounding mobs die, it can directly receive a 50% health bonus.

This is a rather difficult feature to deal with.

However.

Their base HP is too low.

In other words, Cheng Shen who challenged this time was much stronger than last time. In the first gold coin challenge, he didn’t get a first-level main tower until the third wave. This time, the natural disaster tower has been upgraded to ten.

Level six.

The output capabilities are not at the same level at all.

Woo!

Dust and sand filled the air.

The characteristics of the famine disaster were quickly triggered. These disembodied wandering souls were also unable to stop the gnawing of famine bugs. Those bugs seemed to be formed from hungry ghosts in hell, and could even eat energy and spirit!

-410!

-410!

-410!

The damage numbers rose up one after another.

The malicious wandering soul that had been strengthened by the aura only had a health volume of just over a thousand, and turned into yellow sand in the blink of an eye. Only the elite monster could hold on for a little longer, but in the end it failed to break through the desolate cover.

.

【Defense successful!】

[Currently accumulated rewards: 40 gold coins!]

[Obtain: Elite Treasure Box!]

【Do you want to continue the challenge? 】

"There is no pressure. According to this output, the fifth wave of boss monsters can be easily solved. The only difficulty lies in the tenth wave."

Cheng Shen thought easily.

He also has several prop scrolls that he kept from the last challenge.

If you still can't beat the tenth wave, it can only mean that the tenth wave may be something the system designed and didn't even think about...

Bang!

The treasure chest glowing with green light was opened directly in front of him.

[Obtain: Void Slate 20!]

[Obtain: Blood of Chaos!]

[Obtain: Scales of Justice!]

The Void Slate can be used to extend the path forward of monsters, and the remaining two props are exclusive Void Runes in the gold coin challenge.

【Blood of Chaos】

【Rune】

[Level: Normal]

[Explanation: When used on defense towers, there is a 10% probability of causing the target to fall into chaos when attacking the enemy. The triggering probability of range attacks will be reduced to 1%. When this state is not triggered, the probability can be superimposed once per second]

【Just Scale】

【Rune】

[Level: Normal]

[Instructions: Use it on crystals. After activating this prop, it will take effect on the next wave of attacks. Every time you successfully defend a wave of monsters, you will gain a layer of strong attack status, which will cause the damage of all defense towers to be 3%, and can be stacked up to 5 layers]

Ordinary level void runes have limited effects.

Cheng Shen also needs runes that increase attack speed by percentage, so that he can increase the attack speed of Blue Whale Tower.

Unfortunately not.

He casually equipped the Blood of Chaos on the Calamity Tower, and then set the Scales of Justice into the crystal.

Although a defense tower can only be equipped with a maximum of three void runes.

But according to his experience, even if the tenth wave is reached, the number of void runes will not be enough to inlay every defensive tower.

There is no need to reserve a spot in advance.

Subsequently, Cheng Shen added the twenty newly obtained void stone slabs. However, this time he did not modify the road into a staircase to increase the shrouding damage of the natural disaster tower, but stretched the path as far as possible.

Extends the straight line distance of the path.

then.

Cheng Shen will build the two control-type defense towers drawn from the fourth wave of rewards at the front end.

In this way, the monsters that have just left the vortex gate will be restrained by the control tower first.

The disaster tower's attack cannot be triggered until it leaves the control zone.

Take some extra time.

The Blue Whale Tower and Heaven's Mercy can provide an extra point of Abyssal Power for the Calamity Tower.

Rest duration is limited.

But the system does not stipulate how long the monsters must be cleared within!

Use this method.

The monsters in the fourth wave were obviously more fragile than the third wave. They relied on the cross-influence of the three control towers, but they were delayed for five minutes!

When the last monster dies.

Accompanied by light.

The Natural Disaster Tower also successfully broke through to the rare level in the fourth wave.

Buzz!

The bloody light that symbolized disaster suddenly rose on the base of the tower that was engraved with disaster scenes. The yellow light that represented the disaster of famine gradually changed color and became deeper and thicker, like yellow sand, condensing into a cracked face.

"Uh...!"

A dull groan came from his face.

Suddenly, a strong wind blew up, mixed with fine yellow sand, and the surrounding temperature increased. The area around the Natural Disaster Tower seemed to have turned into a desert. The flying sand seemed to have dyed the whole world with a touch of desolation for a moment!

[The disaster of famine has been upgraded!]

The prompt came.

Cheng Shen looked immediately.

The original famine disaster feature has been upgraded to: Red Earth Catastrophe.

The range of influence of Red Earth Tribulation remains unchanged, and it still requires ninety yards to be triggered. However, in addition to the original reduction in total resistance, there is an additional 30% slowdown effect, and the damage bonus is increased to twice that of the panel attack.

Just like the plague.

Well, now, Cheng Shen has never seen the effects of the latter two disasters.

But it seems that it is difficult for him to see...

Among the rewards at the end of the fourth wave, a blue-returning auxiliary tower appeared again, and Cheng Shen took the lead in building it.

This is a rare tower.

The first-level effect is: It can provide the target with 10 points of energy per second equal to the target level.

After the fourth wave, the Calamity Tower has reached level 21.

That's 31 points per second.

at the same time.

This defensive tower also enjoys the boost from the Blue Whale Tower.

The fifth-level Blue Whale Tower can restore 50 points of energy to the defense towers within the range every 5 seconds.

That means.

This rare tower can provide 41 points of Abyssal Energy to the Scourge Tower every second.

Counting the increases of Heaven's Mercy and Blue Whale Tower.

Now.

The natural disaster tower's abyssal energy increase rate has reached 91 points per second!

However, similarly, after the Natural Disaster Tower breaks through to the rare level, the energy value required for each upgrade increases to 10,000.

The mana recovery efficiency has been increased.

But the upgrade speed of the natural disaster tower has become even slower.

The three-minute rest period only allowed the Calamity Tower to be upgraded from level 21 to level 23, but even so, compared to the last time Cheng Shen faced the fifth wave of boss monsters, it was already an almost completely different improvement.

Rumble...!

The vortex at the end of the path shuddered and spun.

fifth wave,

The boss monster appears!

A pale palm stretched out from the whirlpool first. The palm was so big that it seemed to open the entire whirlpool. Its huge figure loomed behind the light. Before it appeared, countless monsters poured out of it!

These monsters look like a big dog, but they have no hair on their bodies and are covered with a layer of dark red scales. Their swinging tails have barbs, like scorpion tails. Their open mouths are drooling with saliva and are covered with sharp serrations.

.

And closely followed.

It is a hellhound with a body like a yak and three heads.

The head on the left side was spitting out flames, the head on the right side was brewing with venom, and the head in the middle actually held a broken long sword in its mouth.

"This guy is the leader of the fifth wave..." Cheng Shen's eyelids couldn't help but twitch, "What is that pale palm holding up the vortex!?"

The vortex blocked all breath, making Cheng Shen unable to sense the other party's existence.

But through the crimson light, Cheng Shen could faintly see that the shadows on the opposite side were shaking, as if there was a huge figure holding up a city sunk in darkness...

Buzz!

The first few defense towers have been activated.

Grounding, stun, and disturbing sound waves all hit the fastest group of monsters.

Their speed suddenly slowed down.

But at this time, the dark red scales covering these big dogs squirmed as if alive, fell off to the ground, grew densely packed thin legs, and turned into thousands-legged centipedes in the blink of an eye!

They successfully avoided the control of several towers.

Then.

Triggered the Scourge Tower's attack.

call!

Within the coverage area of ​​the Red Earth Tribulation, invisible flames seemed to rise from the surface. The earth was dry and cracked. The high temperature distorted the space. The skin was scorched black, and the ghost-shaped figure let out a painful howl.

Snap!

A centipede that stepped into the attack range seemed unable to withstand the high temperature, and the scales on its body split into countless fine lines in an instant.

Life was rapidly drained from its body.

He didn't struggle for a few steps.

It was completely baked into a dry and hard specimen.

-1764!

-1764!

-1764!

The high damage figure can rise almost twice every second!

The attack speed of God's Speed ​​Tower and Heaven's Mercy is increased, making the attack interval of the Scourge Tower infinitely closer to 0.6 seconds.

The damage has reached a very abnormal level!

"Ouch!"

At this time, the three-headed hell dog suddenly roared.

The leader unit originally wanted to wait until all the mobs were dead before starting to attack, but this Cerberus seemed to be different. It suddenly took a step forward, and then the head in the middle suddenly shook the broken long sword.

Snap!

The long sword shattered in response.

It turned into a dark black chain composed of countless mantras, flew over a distance of hundreds of meters in an instant, and tied up the base of the Natural Disaster Tower.

The dark incantations were like tiny poisonous insects, exuding malice and quickly corroding the hard base of the tower. The traces left behind were just like sword marks. From a distance, the base of the tower seemed to have been cut off by a sword!

The red ground immediately dissipated and could no longer hinder the progress of those thousand-legged centipedes. The natural disaster tower immediately lost its function!

"Dang~!"

The melodious sound of the harp sounded.

Cheng Shen had already prepared, and he controlled the song of purity to start playing immediately. The holy light fell on the natural disaster tower, and immediately reacted violently with the dark incantations, and a large section of the chain was quickly evaporated.

But until the holy light disappeared, parts of the dark chains still remained on the base of the tower.

A purification effect cannot completely remove the influence of the long sword!

However, Cheng Shen did not panic. His huge body rippled in the sea of ​​stars, scattering patches of light.

The energy bar of Song of Purity was immediately refilled.

The piano sounded for the second time.

Finally, the dark and vicious spell was completely cleared away.

At this time, the fastest few thousand-legged centipedes have crawled out of the scope of the Red Earth Tribulation.

But what awaits them is not relief.

But another nightmare.

Buzz!

The green ball of light on the base of the tower lit up, releasing a thick poisonous mist that shrouded the path. The centipede that had just climbed into the poisonous mist suddenly had a layer of faint green on its body, and dense spots appeared on its scales.

Densely packed like mold spots.

In the poisonous fog.

There are also countless scary ghosts with sores on their faces and bloated bodies with pus.

Once you are touched by these sick ghosts.

You will be immediately given a random curse effect!

The intensity of the Plague Disaster is no weaker than that of the Red Earth Tribulation. The monsters that managed to break through in the previous stage were simply thrown out of the tiger's mouth and into the wolf's den.

He died completely in the blink of an eye.

"Ouch!"

The three-headed hell dog finally couldn't hold back anymore. Flames spewed out from the right side of its head, fell on the path, and spread quickly. Then it stepped on the flames and rushed into the scope of the Red Earth Tribulation.

-1324!

-1324!

-1324!

The high resistance reduces part of the damage it takes, and allows it to ignore the control of other defense towers and the slowing effect of the Red Earth Tribulation.

In just three seconds, it ran directly across a distance of thirty yards and arrived at the area filled with poisonous clouds.

But as a price, its HP also dropped by one-sixth.

It continued to sprint forward and broke into the poisonous fog. At this time, Cheng Shen was shocked to find that it was actually immune to the damage of the plague cloud!

Poison immunity?!

Cheng Shen reacted quickly.

The currently exposed attributes of this hell dog are the dual attributes of fire and poison.

It is not immune to the damage from the Tribulation of the Red Earth because the damage from the Tribulation of the Red Earth mainly comes from famine insects.

rather than flame.

But when faced with the poisonous plague cloud, it seemed to be at ease.

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